Crepusculum

Crepusculum is a nice project: a survival horror made with RPG Maker. Maybe can sounds weird... a survival horror made with japanese "kawai" characters... someone can ask if it can be really creepy. Well, it's very creepy instead, with a great atmosfere and a nice gameplay. It worths a try!

You can find it here, and you need the RPG Maker runtime libraries.
The author will release (not too soon...) an extended version, Crepusculum X (something like a Director's Cut) and a sequel.